I've been searching for quite a long time for a Hebrew-Arabic grammar book to study both languages in more depth at the same time while being able to compare similar roots and the root system for instance. I've only been able to find old books treating general Semitic languages or enormous volumes of comparative grammars.
I was just wondering if someone could recommend me some book. It doesn't matter if it's too informal grammatically speaking or too formal, but there doesn't seem to be anything out there anyways.